


PHP geek proficiency test - remote interview questions for startup companies_PHP tutorial
There is an interview question "PHP Geek Proficiency Test". Start-up companies can use this remote written test. Answer the questions first, and then invite you for an interview if the answers are suitable. I hope it will be helpful to startups. Welcome to watch and give suggestions^_^
Questions will be continuously updated.
Answer address: http://www.diaochapai.com/survey915595
Preview:
PHP Geek Level Test
Please enter your name: *
Introduction to Computer Culture - Hardware, OS, Software
Which desktop operating system do you prefer to use for development? *
What are the differences between the latest Macs and PCs? *
Mobile phone: Which mobile operating system do you prefer to use? *
Mobile phone: What are the differences between Android and iOS? *
Introduction to Internet Culture - Business Model
Which search engine do you like to use the most? *
Search engines such as Google provide free user searches. What is their business model? *
What is the business model of the first-generation portals such as Yahoo, Sina, NetEase, Sohu, etc.? *
Flappy Bird’s daily income is $50,000. What is its business model? *
91 Assistant, Synchronous Push, PP Assistant, etc. have launched "iOS can install paid APP for free without jailbreaking". What is the principle? *
Calculation question: In fiscal year 2013, Google’s revenue was US$59.8 billion and net profit was US$12.9 billion. What is the approximate net profit margin? *
Calculation question: In 2013, Alibaba’s revenue was approximately US$7.9 billion, net profit was approximately US$3.5 billion, and it had 23,000 employees. What are the per capita output and per capita net profit? *
Calculation question: Five years after WhatsApp started its business, Sequoia Capital holds about 20% of the shares, and the two founders hold 65% of the shares. It has 48 employees and was acquired by Facebook for US$19 billion (12 billion in stock, 40 100 million is cash, and the other 3 billion is stock allowance for employees in the next four years). Except for the founders, how much can each employee get on average? *
91 was acquired by Baidu for US$1.9 billion. If I gave you US$1.9 billion, would you be willing to do piracy? *
Self-cultivation of programmers
What is your favorite version control system and software? *
There is a new feature to be developed. How to operate it in version control? *
A new version is about to be released. How to operate it in version control? *
How many bytes is a Chinese character in GBK? *
How many bytes is a word in UTF-8? *
How many bytes is a word in UTF-16? *
When Windows Notepad saves it as UTF-8 encoding, does the saved file have a BOM header? *
What are the line breaks in Windows and Linux? *
The newline character in Mac OS is r, but starting from OS X, what has been changed to the newline character? *
Windows Notepad saves as, there is "ANSI" encoding, what is the difference between it and "ASCII"? (If you don’t use Windows, this question is not important)
What is the difference between Unicode and UTF-8? *
What is the difference between GBK and GB18030?
The school computer room needs to install dozens of pirated Office, QQ and other software on 1,000 computers. How will you deploy it? Can it be done in one day? *
Do you have any open source works? How many are there? Let me briefly introduce them. *
HTTP protocol
What is the difference between session and cookie? *
Which of the following are HTTP methods? *
Under Windows, when the browser submits a textarea form, what is the newline character during HTTP transmission? *
Under Linux, when the browser submits a textarea form, what is the newline character during HTTP transmission? *
Architecture
Which of the following are VPSs with full OS permissions? *
The company needs an account to log in to internal systems such as CRM, ERP and so on. If you use gmail, you can use OAuth directly. If you use a domestic corporate email without OAuth, how can you implement single sign-on? *
What is the application scope of Session, OAuth2 and SSO, and how to choose them when doing projects? *
The company's CRM, ERP, etc. must have web versions, and there must also be APPs for sales staff to use outside the home (taking pictures, inputting, etc.). When they return to the company, they need to use the web version for large-screen processing. What do they need to purchase? Hardware, how many projects to develop? *
Technical Leadership
What email address do you recommend startups to use? Please briefly describe the reasons. *
What code services do you recommend startups to use? Please briefly describe the reasons. *
What project management system do you recommend startups to use? Please briefly describe the reasons. *
What server do you recommend startups to use? Please briefly describe the reasons. *
How to prohibit external network access to the company’s internal systems such as CRM and ERP?
The overseas products developed by the company have Facebook functions. All engineers need to check that Google is not offline. How to build a network? (It is best not to affect the speed of accessing domestic websites)
The above questions have nothing to do with PHP and can be used as general questions for software engineers. The following are PHP technical issues.
PHP Technology
When developing, what method do you mainly use to debug PHP? *
PHP connects to MySQL, which method do you use? *
Which third-party library do you prefer to use? *
What is phpcs? *
Do you prefer exceptions or errors? Please briefly describe the reasons. *
When writing PHP, how do you like to indent the code? *
There are many styles of PHP system functions. Which style do you prefer when developing functions? *
When writing PHP, which writing standard do you follow? *
Which directory structure is familiar to you? *
Starting a new project from scratch, which PHP framework would you choose? *

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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